Quick detachable implement



Aug. 3, 1954 w, 5 ET AL 2,685,241

QUICK DETACHABLE IMPLEMENT Filed June 1'7, 1949 4 Sheets-Sheet 1 CO r0INVENTORS. 3 WALTER H. SILVER WILLIAM v LOHRMAN Aug. 3, 1954 w slLVER ETAL QUICK DETACHABLE IMPLEMENT 4 Sheets-Sheet 2 Filed June 17, 1949 IN VEN TORS SILVER WALTER H.

B WILLIAM V. LOHRMAN TORNEYS g- 1954 w. H. SILVER ET AL 2,685,241

QUICK DETACHABLE IMPLEMENT Filed June 1'7, 1949 4 Sheets-Sheet 3INVENTORS. WALTER H. SILVER WILLIAM V. LOHRMAN A ORNEYS g- 3, 1954 w. H.SILVER E L 2, 85,241

MEI?!- FIG.7

Patented Aug. 3, 1954 '1 QUICK DETACHABLE IMPLEMENT Walter H. Silver,Moline, Ill., Lohrman, Davenport, Iowa,

& Company, nois and William V. assignors to Deere Moline, 111., acorporation of Illi- Application June 17, 1949, Serial No. 99,772

3 Claims. 1

This application is a continuation-in-part of our co-pendingapplication, Serial No. 578,148, filed February 16, 1945, now U. S.Patent 2,567,736, dated September 11, 1951.

The present invention relates generally to agricultural machines andmore particularly to integral or tractor mounted implements.

The object and general nature of the present invention is the provisionof a new and improved integral implement which may easily and quickly beattached to or detached from its supporting tractor and in which theimplement may be readily attached to the tractor by backing the tractorin position.

More particularly, it is a feature of this invention to provide new andimproved depth adjusting means for adjusting the depth of operation ofthe tools by raising or lowering the front and rear ends of the toolbeams substantially the same amount. Another feature of this inventionis a provision of quick detachable means for connecting the depthadjusting means with the tractor.

More specifically, it is an important feature of this invention toprovide an agricultural implement that is adapted to be attached to avertically swingable drawbar on the propelling tractor, which implementincludes a forwardly extending beam member also connected with thetractor for generally vertical movement, and another important featureof the present invention is the provision of such an implement in whichthe latter is so constructed and arranged as to have lateral swingingmovement relative to the tractor drawbar, the means on the tractorreceiving the front end of the beam member of the implementaccommodating lateral swinging thereof.

An additional feature of the present invention is the provision of a newand improved colter support especially constructed for use with animplement of the type described above, namely, one in which theimplement is connected with a vertically swingable drawbar on thepropelling tractor and which includes a forwardly extending stabilizingbeam member to which the colter support preferably is connected.

These and other objects and advantages of the present invention will beapparent to those skilled in the art after a consideration of thefollowing detailed description, taken in conjunction with theaccompanying drawings in which the preferred forms of the presentinvention have been illustrated.

In the drawings:

Figure 1 i a side view of a quick-detachable implement, such as atwo-bottom plow, showing the same as mounted in position on itspropelling and supporting tractor.

Figure 2 is a plan view of the implement shown in Figure 1, the tractorbeing indicated in dotted lines in order to show the implement partsmore clearly.

Figure 3 is a sectional view taken generally along the line 3-3 ofFigure 2.

Figure 4 is a perspective view of the colter mounting, particularlydesigned for the plow shown in Figures 1-3.

Figure 4a is an enlarged sectional view of the colter shank clamp.

Figure 5 is a perspective view of the colter shank preferably employedin the colter mounting shown in Figure 4.

Figure 6 is a fragmentary plan view showing a modified construction inwhich provision is made for adjusting the hitch plates for regulatingthe out of the front plow bottom.

Figure 7 is a fragmentary perspective view, made at a larger scale, ofthe hitch arrangement shown in Figure 6.

Referring now to the drawings, particularly Figures 1 and 2, thereference numeral I indicates a farm tractor of the four wheel type,having rear wheels 3 mounted on axle means 5 carried by a rear axlestructure 6. The tractor includes a power plant 1 and a power lift unit8 of the hydraulic type, such as is shown in the U. S. Patent 2,477,710,issued August 2, 1949, to Worstell, including suitable valve mechanism Vand other necessary parts, such as a pair of lift arms H and links l2connecting the arms II to lugs 13 formed on the side members 14 of agenerally vertically swingable tractor drawbar or bail member l5. Thelatter is preferably in the form of a U-shaped member, considered as awhole, and includes a rear transverse section I6 which may be formed ofround stock. The sides l4 may be strap members, and the latter arepivoted at their front ends, as at H, to drop housings H! which form apart of the tractor rear axle structure 6. Preferably, the rear part Itis welded or otherwise permanently secured to the side parts Id of thetractordrawbar or bail IS. The two power lift arms I I are clamped orotherwise fixed in any suitable manner to the ends of a power liftrockshaft 28 which forms a part of the hydraulic unit 8. As best shownin Figure 2, a lug 2 is welded or otherwise permanently fixed to thecentral section 56 of the tractor drawbar I5 and is apertured, as at 25,to receive certain types of implements, such as a two-bottom plow, whichmay be reducible to a one-bottom plow, if desired.

According to the principles of the present invention, a two-bottom plowof the quick-attachable type, indicated in its entirety by the referencenumeral 36, is adapted to be connected; with the tractor drawbar $5. Thetwo-bottom plow 38 comprises plow beam members 31, 32 and 33, suitablyconnected together to form a plow frame 3d. 35, 35 and 31. Secured tothe rear end of each of the plow beams BI and 32 is a downwardly andforwardly extending standard 38 to which a moldboard plow bottom 38 isattached in any suitable way. A bracket structure 40 serves to fix eachstandard 33 to the associated plow beam.

The two left-hand plow beam members 3! and 32 are formed to convergeforwardly, as best shown in Figure 2, and their forward converged endsare apertured to receive a pivot pin ll which extends through a pair oflugs 52 welded or otherwise secured to a saddle member 43. The lattermember is formed preferably of fiat stock bent over onto itself ingenerally U-shaped configuration, as best shown in Figure 1, and thestock is trimmed so as to form a generally triangular structure, asshown in Figure 2. The forward apex section of the saddle member 43 isapertured to receive a detachable hitch pin it, the hitch pin includinga lower end section ll adapted to pass downwardly through the openingsin the saddle member 43 and the opening 25 in the bracket member 24 thatis secured to the tractor drawbar member I8. A spring clip #8 serves toretain the hitch pin 56 in position. A second pair of rearwardlyextending lugs 51 is fixed to the rear side of the saddle member 33 andreceives a pivot pin 52 that passes through an apertured car 53 formedon and extending forwardly of a vertically adjustable lug 54. The lattermember is internally threaded to receive a leveling screw 55 which isrotated by a handle 55 and is held for rotation in a vertical U-shapedbracket 5?. The bracket 51 is fixed to the forward end of the right-handplow beam member 33, as best shown in Figure 2. A laterally inwardlyextending bracket Si is also fixed to the front end of the right-handplow beam member 33 and receives a pivot 82 that extends in a transversedirection through an opening in the rear upturned end 56 of alongitudinally extending bar or stabilizing member 6?. The rear end ofthe stabilizing bar or beam $7 is upturned and is apertured to receive apair of bolts II which secure to the bar 61 a pair of spaced brackets 13which are apertured to receive the trunnions I4 of a sleeve member 75.The forward threadet end of an adjusting strut 16 passes through thesleeve l5 and receives a pair of lock nuts 1'! thereon. The rear end ofthe strut or link 16 receives a pair of pivot clamps 8i which areconnected by a pivot pin 82 to a pair of generally outwardly offset,upwardly extending bracket plates 83, the lower portions of which aresecured by the same bolts 84 that fasten the two The frame 34 alsoincludes suitable braces iii) plow beam members 32, 33 and the brace 35together.

The front end of the stabilizing bar or beam til is arranged, when thetwo-bottom plow 30 is attached to the tractor, to extend forwardlyunderneath the rear axle 6 of the tractor and at its forward end restsin a vertically shiftable, depth adjusting bail member 95, the upperends of which, as best shown in Figure 3, are apertured to receive across bar 96 that is carried in the rear lower ends of a pair of arms 9;and 98 which at their upper or forward ends are welded or otherwisesuitably fixed to a cross shaft se. The latter is supported in suitablebearing brackets IGI and H12 and at one end has an arm [03 fixed theretoand connected by a link I04 to an arm I05 formed on the left side memberId of the tractor drawbar bail I5. Connection between the front end ofthe link I05 and the arm I83 is effected by means of a clamping swivelH15, and a similar clamping swivel I'il'l serves to connect the rear endof the link HM with the upper end of the arm W5. The cross shaft 99 isheld in the desired lateral position with respect to the bearingbrackets I!!! and I02 by clamp collars I09.

The two bearing plates It]! and H32 are adapted to be readily andquickly attachable to and detachable from the tractor I, preferably theintermediate portion thereof forward of the rear axle 5. To this end,the tractor carries a pair of at taching plates H2, bolted to thetractor, as at H3 and H4. Each of the attaching plates H2 is providedwith a forwardly facing notch II5 (shown in dotted lines in Figure 1)which is adapted to receive the cross shaft 99, the upper and loweredges of the notch H5 flaring downwardly and forwardly to facilitatemovement of the shaft 99 and associated parts into position. Also, eachof the bearing brackets Ill! and I02 is provided with a rearwardlyfacing notch II'I which is adapted to receive a stud H8 carried by theassociated tractor attaching bracket H2, each stud I :8 receiving a wingnut I I9.

The two-bottom plow 30 preferably is provided 5 with a rolling colterfor each of the plow bottoms.

The rolling colter for the rearmost plow bottom 32- is indicated in itsentirety by the reference numeral IZI and is of conventionalconstruction, comprising a colter disk I22 mounted for rotation in therear and lower portion of a colter yoke I23 which at its forward orupper portion is connected' by a clamp I24 for limited lateral swingingmovement to the lower end of a colter shank I25. The latter memberincludes a vertically extending section I26 which is secured to thelefthand plow beam 3! by a colter clamp I21, the end 26 extendingvertically a sufiicient distance above the beam 3 I to provide for anydesired vertical adjustment of the colter. This colter construction,just described, is conventional so far as the present invention isconcerned, but a colter unit of this kind cannot be supplied for theforwardmost plow bottom 39, due to the likelihood of the upper sectionI26, which must necessarily extend upwardly above the beam a substantialdistance, striking or colliding with parts of a tractor and/or tractorhitch structure since the colter unit for the forwardmost plow bottommust be disposed substantially directly underneath the saddle member 43.Accordingly, the present invention contemplates a novel form of coltersupport, especially adapted for the plow just described and any otherplow construction in which the space available for colter mounting islimited. Our new colter support will now be described.

As best shown in Figure 4, the colter support of the present inventionis indicated in its entirety by the reference numeral I and comprises aspecially formed colter shank I3! and a shank clamp unit I32 carried bythe stabilizing bar or beam 6'! immediately forwardly of the upturnedend 66 thereof, which'disposes the colter substantially directlyunderneath the saddle member 43. As best shown in Figure 5, the coltershank I3! comprises a lower yoke-receiving section I34 extendingsubstantially perpendicular to a fore and aft extending intermediatecolter shank section I35 and an attaching section I35 that extendslaterally substantially at right angles to the intermediate section I35.The attaching section I 36 is provided with an elongated slot I37 formedin the upper side thereof. The attaching section I36 is adapted to bedisposed transversely relative to the stabilizing bar 67, and to beadjusted laterally inwardly or outwardly relative to the beam in atransverse direction. The colter clamp unit I32 is especiallyconstructed to accommodate not only the abovementioned in-and-outmovement of the colter shank I3I relative to the beam 5?, but also toprovide means for rocking the colter shank I3I about a transverse axisso as to provide for raising or lowering the colter disk I22. The colterclamp unit I32 will now be described.

Attached to opposite sides of the beam 57, as

by bolts I38 or the like, is a pair of clamp plates I39, each of whichis provided with an upwardly facing recess MI and upwardly extendingapertured lugs I42. When the plates i355 are attached to the beam 67,the recesses MI and the apertures in the lugs I42 are disposed inalignment. The recesses I lI form a socket to receive the lower side ofthe attaching section I 36 of the colter shank I3I. A pair of pivotbolts I44 are swingably mounted on pins I 45 carried in the apertures inthe lugs I42, and the pivot sections of the bolts I44 extend upwardlythrough apertures in a clamp cap I46. The clamp cap M6 is provided witha downwardly facing recess section I 41 shaped to receive the upper sideof the attaching section I36 of the colter shank IBI, and a rib I48 iscarried in the recess M1, extending downwardly and shaped to enter theslot I31 in the colter shank. The rib I 48 and the slot I 31 forminterlocking means acting between the attaching section !36 of thecolter shank ISI and the clamp I 55, whereby loosening the nut I69 onone of the clamping bolts Md and tightening the nut on the otherclamping bolt I44 serve to rock the colter shank I3I about thetransverse axis as defined by the attaching section I36. This raises andlowers the colter disk I 22 which, as described above, is attached tothe lower or colterreceiving section I34 of the colter shank I3I by thecolter yoke clamp I24. By loosening both of the nuts M9 the colter shankI3! may be shifted laterally inwardly or outwardly, as desired. It willthus be observed that without having any upwardly extending parts, suchas the upper end I26 of the colter shank I25 described above, theforwardmost colter disk I22 may be raised or lowered. by rocking thecolter shank I3I about a transverse axis on the beam 6? and also thatthe colter may be shifted inwardly or outwardly relat ve to the beam 6?by merely loosening the cap I46.

The operation of the above-described embodiment of this invention issubstantially as follows.

Figure 1 shows the parts in operating position, and it will be notedthat as the outfit moves forwardly, the pressure of the soil against theplow bottoms 39 tends to cause the tool unit, which includes the bottoms39, the stabilizing bar or longitudinal beam 61 and associated parts, totend to swing about the axis defined by the rear cross bar member I6 onthe tractor bail or drawbar I5. This movement is, however, restrained bythe engagement of the front end of the bar 61 in the depth adjusting orvertically swingable bail 95. The position of the latter depends uponthe position of the tractor drawbar 01' bail I5, since they are linkedtogether by the link IM and associated parts, as best shown in Figure 1.If it should be desired to cause the plow bottoms 39 to operate atincreased depth, the valve mechanism V is operated so as to permit thebail I5 to lower the desired amount. The lowering of the bail I5 exertsa pull on the links I03 which, in turn, serves to lower the front ordepth adjusting bail 95, and the connections are so arranged that thebail is lowered, or raised, substantially the same as the cross bar Idof the tractor drawbar I5, whereby the position of the tool is changedas desired but the tool is moved into different parallel positionsrelative to the tractor.

When it is desired to lift the tool into a transport position, the valveV is operated to cause the power lift arms I I to be swung upwardly.Since the greater weight of the tool lies rearwardly of the bar IS, thefirst effect of the lifting action is to raise the front end of thestabilizing bar Bl upwardly until it contacts the pivot bar 96 (seedotted line position of the bar 67 in Figure 3). After this contact isestablished the further up ward movement of the lifting arms II servesto raise the entire implement, but the upward movement of the front endof the bar 67 has the advantage that in the first part of the liftingaction the plow bottoms 39 are tipped upwardly so as to aid andaccelerate their running out of the ground. When first lowering thebottoms into the ground to start operation, the front end of the bar 61remains in contact with the bar 86 until the rearward pressure of thesoil against the lower portions of the bottoms 39 serves to swing thebar 61 down against the bail 95 in its normal position.

The saddle member 43 forms a forwardly facing socket s and whenattaching the implement to the tractor, the latter is backed with thedrawbar I5 disposed in a position to enter between the upper and lowerportions of the saddle member 43, after which the hitch pin 45 may beplaced in the apertured portions of the saddle member 43 and the forwardapertured lug 24 of the tractor drawbar. The relative an gular positionof the stabilizing bar 6! to the plow frame may be adjusted by looseningone of the lock nuts TI and tightening the other, thereby shifting thesleeve I5 along the strut 76 in one direction or the other and thuspivoting the plow frame about its pivotal connection with thelongitudinal stabilizing bar or plow beam 67. The plow may be leveled byturning the adjusting screw 55 in one direction or the other. It will benoted that uniform depth of operation is normally maintained even thoughthe tractor may pass over uneven ground. For example, it will beremembered that the tractor drawbar I5 and its connections are soarranged that the drawbar I5 in any position of adjustment may movemomentarily upwardly out of that position and then downwardly back tothat particular position without material restraint. Thus, in case thefront wheels 2 of the tractor pass over a ridge or the like, the upwardtilting of the front end of the tractor does not force the plow bottoms39 into the ground beyond normal depth because under the conditions justassumed the tractor drawbar I momentarily rises with respect to the rearend of the tractor. Likewise, if the front wheels 2 of the tractorshould drop into a hole or the like, the rear drawbar I5 is, of course,pulled upwardly, since it cannot move downwardly with respect to thetractor, but this does not pull the tools out of the ground to anyappreciable extent since the front end of the stabilizing bar 61 merelyrises momentarily to the upper cross bar 96 (dotted lines, Figure 3).This action, although momentary, minimizes the variation in the depth ofoperation of the tools in the event the front wheels of the tractor dropinto a depression.

In Figure 6 we have shown a modified form of the present invention inwhich provision is made for adjusting the hitch connection between theplow frame and the saddle member 43 so as to regulate the out of thefront bottom and maintain or secure the correct line of draft. Referringnow to Figure 6, the saddle member 266 is appreciably wider than thesaddle member 33 and at the left side is provided with two laterallyspaced, rearwardly extending apertured lugs I6I, and at the right sideis provided with two similar laterally spaced, apertured lugs I62. Atransverse pin I63 is carried by the lugs I6I and a similar transversepin I64 is carried by the lugs I62. The front ends of the frame bars 3|and 32 are carried on the pin I63, and the front end of the right-handframe bar 33 is carried on the pin I64, the lugs I6I and I62 beingspaced apart a distance sufficiently great to accommodate a lateralmovement of the plow frame 34. A plurality of spacers I65 is disposed onthe pin I63, which is so constructed and arranged as to be readilydetachable from the lugs I6I, and the lateral position of the plow frameis adjusted relative to the saddle or socket member I60 for changing oneor more of the spacers I65 from one side of the associated frame members3I and 32 to the other side.

A further modified form of the present invention is shown in Figure 7.Referring now to this figure, it will be noted that the adjusting strutit (Figure 1) and associated parts may be replaced by an overloadrelease device in the form of a toggle linkage I19 connected at itsfront end, as by a pin l1I, with the upper end of the upwardly extendingportion 66 of the stabilizing beam 61. The rear end of the togglelinkage I18 is connected by a pin I12 to a bracket I13 fixed, as bywelding, to the rear portion of the frame member 32. The toggle linkageIii! comprises a pair of pivotally interconnected links 14 and I15having their interconnected ends provided with cams which when the linkspivot cause the interconnected ends of the links to separate against theforce of resilient members I16 disposed about the ends of a pivot boltI11 which defines the pivot axis about which the links I14 and E15 maymove under an overload. So far as the present invention is concerned,the particular details of the overload release toggle linkage 115 arenot new, being substantially the same as those shown in the prior patentto John 1. Central 2,337,- 026, dated December 21, 1943, to whichreference may be made if necessary,

While we have shown and described above the preferred structure in whichthe principles of the present invention have been incorporated, it

8 is to be understood that our invention is not to be limited to theparticular details, shown and described above, but that, in fact, widelydifferent means may be employed in the practice of the broader aspectsof our invention.

What we claim, therefore, and desire to secure by Letters Patent is:

l. The combination with a tractor having a vertically swingable bail andmeans on the treetor for swinging said hail, of an agricultural machineincluding a ground working tool, an attaching part shaped to receive therear portion of said bail, draft-transmitting means pivotally connectingsaid attaching part with said tool for movement relative thereto about agenerally transverse axis, means for pivoting said attaching part tosaid bail for lateral swinging relative thereto, a member connected withsaid tool in laterally rigid relationship and extending forwardly of thetractor beyond said bail, and means on the tractor operatively connectedwith the forward end of said rigid member for raising and lowering thelatter, said last mentioned means including a generally verticallyshiftable part extending generally laterally of the tractor and slidablyreceiving the forward end of said rigid member so as to accommodatelateral swinging of the attaching part and ground working tool relativeto the tractor.

2. A plow adapted to be connected to a tractor having a verticallyswingable bail and means on the tractor for swinging said bail, saidplow comprising means serving as a frame, furrow opening means rigidlyfixed thereto, an attaching part shaped to receive the rear portion ofsaid bail and. to be held against movement relative to said bail in agenerally vertical direction, means pivoting said frame means to saidpart for movement relative thereto about a generally transverse axis,means for pivoting said attaching part to said bail for lateral swingingmovement relative thereto about a generally vertical axis, a stabilizingmember, pivot means disposed adjacent said axis for pivotally connectingsaid stabilizing member adjacent its rear end to said frame means, saidstabilizing member extending from said pivot means forwardly relative tothe tractor, strut means connected between said frame means and saidstabilizing member for holding the latter rigid relative to said framemeans, and means on the tractor connected with the forward portion ofsaid stabilizing member for raising and lowering the front end of thelatter to adjust the depth of operation of said furrow opener means.

3. An implement adapted to be connected to a tractor having a tractordrawbar, said implement comprising tool means, a tractor drawbarreceiving member including upper and lower sections spaced apart toreceive the tractor drawbar therebetween, generally vertically disposedpivot means for connecting said drawbar receiving member to said tractordrawbar, means including a pair of laterally spaced apart pivot meansconnecting said tool means with said drawbar receiving member, one ofsaid pair of pivot means being generally vertically adjustable forleveling the implement relative to said drawbar receiving member, aforwardly extending beam member fixed at its rear end to said tool meansfor movement therewith, and means for adjustably connecting theforwardly extending beam member at its forward end to said tractor, saidlast mentioned means including a part movably receiving the forward endportion of said beam member and accommodating movement of the 9 latterwith said tool means about the axis of said generally verticallydisposed pivot means and also movement of said beam member with saidtool means when said vertically adjustable pivot member is adjustedvertically.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 158,253 Curtiss Dec. 29, 1874 770,372 Lake et a1 Sept. 20,1904 780,609 Hoffert Jan. 24, 1905 Number 10 Name Date Fojtik June 17,1930 Lindgren et a1 Dec. 26, 1933 Bowen Jan. 15, 1935 Reynolds Nov. 21,1939 Bunn June 22, 1943 Cantral Dec. 21, 1943 Silver Aug. 6, 1946 MartinJan. 14, 1947 Martin Apr. 27, 1948 Strandlund Oct. 4, 1949

